Write a C program to compute the perimeter and area of a circle with a given radius.

Write a C program to compute the perimeter and area of a circle with a given radius.

We all know,

Area of circle is pi*radius*radius

Perimeter of circle is 2*pi*radius

So, according to upper formula we can write a C Programme that can calculate the area and perimeter of circle.

#include<stdio.h>

#define pi 3.141592

int main()

{

    float r, peri, area;

    printf(“Enter the radius of Circle (in inches): “);

    scanf(“%f”, &r);

    peri = 2 * pi * r;

    area = pi * r * r;

    printf(“Perimeter of the Circle = %0.2f inches”, peri);

    printf(“Area of the Circle = %0.2f square inches”, area);

}